Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8468813 | Snap-action valve for exhaust system | William E. Hill, Steven Clayton | 2013-06-25 |
| 5012891 | Muffler assembly | — | 1991-05-07 |
| 4735283 | Muffler with flow director plates | — | 1988-04-05 |